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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 23 — Dec. 1, 2009
  • pp: 3725–3727

Design of plasmonic back structures for efficiency enhancement of thin-film amorphous Si solar cells

Wenli Bai, Qiaoqiang Gan, Filbert Bartoli, Jing Zhang, Likang Cai, Yidong Huang, and Guofeng Song  »View Author Affiliations

Optics Letters, Vol. 34, Issue 23, pp. 3725-3727 (2009)

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Metallic back structures with one-dimensional periodic nanoridges attached to a thin-film amorphous Si (a-Si) solar cell are numerically studied. At the interfaces between a-Si and metal materials, the excitation of surface-plasmon polaritons leads to obvious absorption enhancements in a wide near-IR range for different ridge shapes and periods. The highest enhancement factor of the cell external quantum efficiency is estimated to be 3.32. The optimized structure can achieve an increase of 17.12% in the cell efficiency.

© 2009 Optical Society of America

OCIS Codes
(040.5350) Detectors : Photovoltaic
(240.6680) Optics at surfaces : Surface plasmons
(260.2110) Physical optics : Electromagnetic optics
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:

Original Manuscript: May 11, 2009
Revised Manuscript: October 22, 2009
Manuscript Accepted: October 24, 2009
Published: November 30, 2009

Wenli Bai, Qiaoqiang Gan, Filbert Bartoli, Jing Zhang, Likang Cai, Yidong Huang, and Guofeng Song, "Design of plasmonic back structures for efficiency enhancement of thin-film amorphous Si solar cells," Opt. Lett. 34, 3725-3727 (2009)

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